Redhead gauge

例句：

1. 1.The redhead gauge is used to measure the length of hair.
   红发测量器用于测量头发的长度。
2. 2.She used the redhead gauge to measure the width of the room.
   她使用红发测量器来测量房间的宽度。
3. 3.The redhead gauge was a popular tool for measuring hair lengths in the 19th century.
   红发测量器是19世纪测量头发长度的流行工具。